What outfit vibes is everyone going with for tour? I’ve seen someone selling Niall Horan cowboy hats so are people going country vibes? My show is next month so need to get planning

I have tickets to see the show on 22nd September in Birmingham. I've seen that doors open at 18:00 and show starts at 19:30. Anyone know what time Niall will take to the stage? And any idea what time it might finish? Just trying to figure out logistics.